氢氧化钠、L-苹果酸改性亚麻超声波辅助吸附甲基紫研究  

Study on Adsorption Performance of Flax Modified by L-Malic Acid and Naoh on Methyl Violet Under Ultrasonic Wave Assistant

作　　者：淡玄玄 李小敏[1] 朱振华[1] 

机构地区：[1]伊犁师范学院化学与环境科学学院,污染物化学与环境治理重点实验室,新疆伊宁835000

出　　处：《水处理技术》2016年第9期56-61,共6页Technology of Water Treatment

基　　金：国家自然科学基金(21261023)

摘　　要：采用超声波辅助手段,对改性亚麻吸附甲基紫进行了研究,通过单因素变量和正交实验选出优化组合。结果表明,改性亚麻的吸附量和去除率均高于未改性亚麻。亚麻改性的优化条件是:改性时间100 min、改性温度40℃,经1 mol/L的氢氧化钠改性之后又经0.2 mol/L的L-苹果酸改性;其吸附25 mL甲基紫溶液的优化条件是:吸附时间100 min、温度50℃、吸附剂投加量0.3 g、甲基紫初始质量浓度80 mg/L,在此条件下对甲基紫的吸附量和去除率分别为39.47mg/g和99.67%。正交实验得出最大吸附量优化组合为改性温度40℃、吸附时间120 min、吸附剂用量0.1 g,吸附量39.97 mg/g;最大去除率的优化组合为改性温度60℃、吸附时间120 min、吸附剂用量0.5 g,此时去除率99.67%。The adsorption of methyl violet based on the modified flax by ultrasonic means was studied. The operation conditions was optimized through single factor variate and orthogonal experiments. The results show that： the modified flax adsorption capacity and removal rate were higher than the unmodified flax. Optimal conditions are modified flax： modification time 100 min, modification temperature 60℃, by 1 mol/L of sodium hydroxide and later modified by 0.2 mol/L L-malic acid modification, the optimal conditions for adsorption methyl blue from 25 mL solutions was： adsorption time 30 min, temperature 50℃, adsorbent dosage 0.3 g, initial dye mass concentration of methyl violet is 80 mg/L, methyl violet optimum adsorption capacity and removal rates were： 39.37 mg/g, 99.87%. Orthogonal experiments the optimum combination of maximum adsorption capacity of modified temperature 60℃, adsorption time 120 min, adsorbent dosage 0.1 g, adsorption 39.97 mg/g; the optimal combination of maximum removal of modification temperature was 60℃, adsorption time was 120 min, adsorbent dosage was 0.5 g, and the removal rate reached 99.67%.

关 键 词：超声波 L-苹果酸 改性 亚麻 甲基紫 正交实验 

分 类 号：X703.1[环境科学与工程—环境工程]